Segment Information - Operating Results by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Net sales	$ 4,370,086	$ 4,525,284	$ 12,285,839	$ 13,242,344
Intangible asset amortization			(70,219)
Income before income taxes	297,665	283,879	153,822	758,093
Operating Segments
Segment Reporting Information [Line Items]
Net sales	4,370,086	4,525,284	12,285,839	13,242,344
Operating profit	391,744	360,086	976,089	1,025,752
Operating Segments | Automotive Parts
Segment Reporting Information [Line Items]
Net sales	2,960,379	2,792,453	8,038,863	8,192,369
Operating profit	266,124	222,561	627,608	630,865
Operating Segments | Industrial Parts
Segment Reporting Information [Line Items]
Net sales	1,409,707	1,732,831	4,246,976	5,049,975
Operating profit	125,620	137,525	348,481	394,887
Other
Segment Reporting Information [Line Items]
Interest expense, net	(25,221)	(24,880)	(69,965)	(70,483)
Intangible asset amortization	(24,223)	(24,910)	(70,219)	(68,785)
Corporate expense	(33,379)	(38,830)	(117,053)	(103,582)
Other unallocated amounts	$ (11,256)	$ 12,413	$ (565,030)	$ (24,809)